<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 流年 <liu21st@gmail.com>
// +----------------------------------------------------------------------

// 应用公共文件


/**
 * 获取客户端IP地址
 * @param integer $type 返回类型 0 返回IP地址 1 返回IPV4地址数字
 * @param boolean $adv 是否进行高级模式获取（有可能被伪装）
 * @return mixed
 */
//function get_client_ip($type = 0,$adv=false) {
//    $type       =  $type ? 1 : 0;
//    static $ip  =   NULL;
//    if ($ip !== NULL) return $ip[$type];
//    if($adv){
//        if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
//            $arr    =   explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
//            $pos    =   array_search('unknown',$arr);
//            if(false !== $pos) unset($arr[$pos]);
//            $ip     =   trim($arr[0]);
//        }elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
//            $ip     =   $_SERVER['HTTP_CLIENT_IP'];
//        }elseif (isset($_SERVER['REMOTE_ADDR'])) {
//            $ip     =   $_SERVER['REMOTE_ADDR'];
//        }
//    }elseif (isset($_SERVER['REMOTE_ADDR'])) {
//        $ip     =   $_SERVER['REMOTE_ADDR'];
//    }
//    // IP地址合法验证
//    $long = sprintf("%u",ip2long($ip));
//    $ip   = $long ? array($ip, $long) : array('0.0.0.0', 0);
//    return $ip[$type];
//}

/**
* 左导航
*/
function left_nav(){
    $left_nav = [
        ['left_img'=>'fa-home','name'=>'主页','url'=>url('Home/index'),'nav'=>[]],
        ['left_img'=>'fa-cubes','name'=>'权限管理','url'=>'','nav'=>[
            ['name'=>'用户列表','url'=>''],
            ['name'=>'权限列表','url'=>'']
        ]]
    ];
    return $left_nav;
}

// 应用公共文件
function getRandChar($length)
{
    $str = null;
    $strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
    $max = strlen($strPol) - 1;

    for ($i = 0;
         $i < $length;
         $i++) {
        $str .= $strPol[rand(0, $max)];
    }

    return $str;
}